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Surprising! Ham Radio Vertical Antennas - Are Longer Antennas Better?

DXCommander

39,278 views

This is quite interesting. Let's compare small quarter waves right up to 1-3/4 wave antennas including the famous 5/8. Why are large verticals sometimes not as good. And why they are sometimes better? You might like this. Callum.

Download MMANA:
Go here: http://gal-ana.de/basicmm/en/
IMPORTANT: Don't download the Pro version but just below the words: "Download MMANA-GAL basic version 3,28 MB (3.440.290 bytes) current version 3.5.3.82"

Link to Mike's video on the 49:1 transformer
▶️ Why is it showing a Short Circuit. 49:1 Tr...

Link to the double your power / balloon video
▶️ What REALLY happens when you DOUBLE your P...

Ian G0CNN also made a great video about a home-brew 5/8 antenna
▶️ 5/8th Wave 10m Vertical Antenna Build

More Videos:
▶️ Antenna Modelling Antenna Modelling
▶️ Tips and Tricks Tips and Tricks
▶️ Antennas Antennas
▶️ Live Streams Live Streams
▶️ Commander World My Stuff
▶️ Foundation Training Ham Radio Training

20 Comments

@tomkoz513 3 years ago

During the Dxww contest a few months ago I made a 10 meter contact to reunion island from northern Illinois which is approximately 10000 miles. My setup was and still is a 5/8 gainmaster roughly 2 meters above average ground at the base, 250 watts, 50 feet of lmr 240 coax and a yaesu ftdx 1200. Couldn’t be happier. What an amazing antenna.

@leestanphill1 1 year ago

absolutely love your channel and common sense "Just try it and see" approach to everything.

@KQ4WLR_Morgan_H 1 year ago

It's awesome to watch you bring this alive and useable. Nobody else on the net makes this make sense and using the modeling software really allows for quickly seeing what you were thinking . Keep it up and thanks for all you do.

Btw if you end up building a hex beam commercially my guess is that they would sell very well ..

73

@texasfrontiersman8245 3 years ago

Please do more tutorials on mmana. Enjoy your videos

@baconwhiskey821 3 years ago

If you interview with Ron Burgundy for a spot on the news team, remember to answer Yes to owning a trident. Great video!

@rafaelgcpp 3 years ago (edited)

The good thing about the vertical EFHW is that as you only need a small piece of the coax as radial/counterpoise, you can more easily place it higher on the mast.

Try putting the half wave up a 12m mast and you gain 3dB. Not much, but it is an improvement over the vertical at ground level

@chrisbartlett6022 3 years ago

Love these type of videos Cal, I learn a lot from them, also your pondering on things too. Hoping to do some more experimenting with my set up again sometime fairly soon.

@DonzOzzo 3 years ago

Brilliant info as usual Professor Callum. 😁👍

@82Lineman 1 year ago

I use the sirio gainmaster at 42’ on top of my tower. In 2 years ive worked 260 countries with 100w. Thanks for this video. It explains why it does so well.

@lyriconii 3 years ago

Great stuff. So much easier to understand with the visuals of the software. Thank you.

@mewintle 2 years ago

Great episode! I love that I had seen the ep on radials so really understood that part.

I’d love to see more about stacked verticals and phasing.

@bassangler73 3 years ago

Cool vid! Thanks bro

@johnpeterson7264 3 years ago

Very interesting stuff. Thanks for doing this !

@m7trsradio 3 years ago

Good info Callum. Thanks for you're time.👍🏽

@FromthehamshackwithNJ4Z 3 years ago

Awesome stuff Callum... The vertical phasing is quite interesting. I have a sirio M400 10meter vertical at about 6meters. it does a good job.

@don_n5skt 3 years ago

Thanks Cal, these musing always make good videos.

@brentjohnson6654 3 years ago

Another great video! Always a bit of fun and learning! All the best from Texas! 73 de KI5HXM

@patriot9455 3 years ago (edited)

I am so glad I found you again. I thought I was subscribed .... I am now!

@jjisella 8 months ago

Nice video thanks!

@brooklyndrive 3 years ago

Thanks Callum. As always, something interesting and informative delivered with enthusiasm and energy! ,
P.s. re your comment about the spreadsheet language l once changed a hand held programming language accidentally to Chinese. That was fun!